Heavy Mountain Snow in the Northwest U.S.; Wintry Mix in the Northeast U.S.

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. overnight into Wednesday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

54°F

12°C

Humidity 69%
Wind Speed NW 5 mph
Barometer 29.97 in (1014.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 7 Jan 12:56 am CST
Extended Forecast for

4 Miles SW San Marcos TX

  • Overnight

    Overnight: Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Light and variable wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 64. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 64 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 79. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 61. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before noon.  Mostly cloudy, with a high near 77. Southeast wind 5 to 10 mph becoming northwest in the afternoon.

    High: 77 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 58. North wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. North wind 5 to 10 mph.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 55. Calm wind.
Wednesday
Mostly sunny, with a high near 80. Light and variable wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 64. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly cloudy, with a high near 79. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 61. South southwest wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms before noon. Mostly cloudy, with a high near 77. Southeast wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 44. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 58. North wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 39. North wind 5 to 10 mph.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 56.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW San Marcos TX
 29.86°N 97.99°W (Elev. 748 ft)
12:44 am CST Jan 7, 2026
1am CST Jan 7, 2026-6pm CST Jan 13, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database